This was announced by former ATO Staff spokesperson Roman Turovets on his Facebook page, Censor.NET reports.
"Valentyn Mykolaiovych Fedychev - a patriot, genuine officer, honest, principled, sincere and decisive person - died today. His heart..."
"Rest in peace," Turovets wrote.
Colonel Fedychev (left) at the position of the artillery division of the 128th brigade, where Ukrainian soldiers seized an enemy tank near Debaltseve, Feb. 5, 2015. Image by Roman Turovets
Fedychev was deputy ATO commander during 2015. He was awarded Danylo Halytskyi and Bohdan Khmelnytskyi of III degree orders for his ATO service.